Ok, everything's been done.
I've installed the following
JBL GTO948 Rear Ovals 400W on the tray
JBL GTO 608C front components
JBL GT5 S644 800W 4channel Amp
Pioneer DEH 5250SD Head Unit
The amp's been connected to the rear ovals as well as the front compos. Now let's get down to business.
I paid about 22.5k for this setup which I thought was pretty decent.
1. When I turn the engine on, and then the music system, I can hear a high pitched noise coming from the speakers. For instance, when no music is playing, like the song is paused, I can hear this noise. The guy who was setting up the system showed me this sound and said this is pretty low in my case and that it happens with most setups. The weird thing is, the pitch of the sound increases as I rev the engine (even when I'm driving). Again, the volume of the high pitched squeal remains constant, but the pitch goes up as I rev, and drops as the RPM drops of the engine. Anyone tell me why this is happening?
2. The sound is absolutely brutal. Music sounds rich and fulfilling, including my metal and hiphop. Lucky Ali and Michael Jackson never sounded this good before either.
3. The head unit does not sit properly in the slot! The guy had a hard time stuffing it in there and it simply doesn't look right. I've also looked at Architect's Palio MJD, and his head unit looks the same. It doesn't seem like a good fit. Any fixes for this?
If anyone could help, especially regarding the noise from the tweeters.
EDIT: After googling the problem this is what I got. And this matches what I'm saying
EXACTLY. Quote:
Originally Posted by www.termpro.com Alternator Whine
To me, alternator whine is the most annoying form of noise. For those of you who are lucky enough never to have been exposed to alternator whine, it sounds like a miniature siren that rises in pitch with the speed of the engine. Alternator whine is almost always caused by a ground loop. The following steps will aid you in locating and correcting a ground loop problem. - Verify that all levels are set properly. (Click here for related article.)
- With the system turned off, unplug the RCA inputs to the amplifier.
- Start the vehicle and turn the system on. If the noise is gone go to step 8. If the noise is still present, it is coming from the amp or the speaker wiring. Continue.
- Turn the system off and disconnect the speaker harness.
- Start the engine and verify that no noise is present. In a few rare instances, I have actually heard speakers reproduce noise without being connected to an amplifier. This noise was being induced by power cables that were very close to the speaker wire. If you do have this type of noise, reroute the appropriate speaker lead and go to step 3.
- With the speaker harness still disconnected, check to make sure there are no shorts between the speaker leads and the chassis of the vehicle. A shorted negative speaker lead will create a ground loop by establishing a second audio ground reference point. If you do have a short, trace the wire out and repair it then go to step 3.
- With the RCA inputs and speaker harness still disconnected from the amplifier, use your VOM to measure from the shield of the RCA jacks on the amp to the chassis of the vehicle. This reading should not be a direct short (100 ohms or more is acceptable.) If this reading does indicate a direct short, you might have a defective amp and should contact the manufacturer for verification. (Note that there are a few "inexpensive" amps or boosters on the market that have their audio ground and electrical ground commoned internally. For units of this type, the information in this article will be of very little value.)
- If you've made it here, you know that the amplifier and speaker wiring are okay.
- Connect the accessories in front of the amp (crossovers, equalizers, etc.) one at a time and check for alternator whine. When each device is tested, there should be nothing plugged into the input of that device. In this way, we will work toward the source unit piece by piece. Be sure to turn the system power off before connecting or disconnecting any cables or accessories.
- Repeat step 9 until all accessories have been tested.
- If a particular accessory is causing noise, try disconnecting it's power ground wire. Go to step 9.
- Now it's time to connect the source unit. Do that now and test for noise.
- If noise is present, try unplugging the antenna. If the noise goes away, you will need to use an antenna isolator. This little gismo opens the shield wire of the coax to eliminate the ground loop caused by the ground at the antenna.
- If you still have noise, try connecting the source unit's ground wire in another location,. preferably as close to the source unit as possible.
- Does the noise vary in amplitude when you adjust the volume control? If it does, the problem is probably power line related and not a ground loop. If this is the case, run the source unit's B+ (yellow) wire directly to the positive terminal of the battery. If this doesn't do the trick, you will probably have to use a power line filter on the source unit's B+ (Yel) and Ignition (Red) wires.
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EDIT 2: Found this on our forum -
http://www.team-bhp.com/forum/ask-gu...pine-hu-2.html